The following sections outline the trace hook major and minor codes for various functions in OS/2. The information in these tables is subject to change as new hooks are added and obsolete ones are removed. The mention of a hook for a specific function does not necessarily mean that the hook actually records data in the current version of OS/2.
Major codes of 0xb8 and 0xb9 have been reserved for use by customers for trace hooks.
It is the intent of IBM to document the format of the trace data associated with each implemented trace hook in OS/2 in the future.